package com.zziq.cloudpicturebank.manager.upload;

import cn.hutool.core.io.FileUtil;
import com.qcloud.cos.COSClient;
import com.qcloud.cos.exception.CosClientException;
import com.qcloud.cos.model.COSObject;
import com.qcloud.cos.model.GetObjectRequest;
import com.qcloud.cos.model.PutObjectRequest;
import com.qcloud.cos.model.PutObjectResult;
import com.qcloud.cos.model.ciModel.persistence.PicOperations;
import com.zziq.cloudpicturebank.config.CosClientConfig;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import java.io.File;
import java.util.ArrayList;
import java.util.List;

@Component
public class CosManager {  
  
    @Resource
    private CosClientConfig cosClientConfig;
  
    @Resource  
    private COSClient cosClient;

    /**
     * 上传对象
     *
     * @param key  唯一键
     * @param file 文件
     */
    public PutObjectResult putObject(String key, File file) {
        PutObjectRequest putObjectRequest =
                new PutObjectRequest(cosClientConfig.getBucket(), key, file);

        return cosClient.putObject(putObjectRequest);
    }

    /**
     * 下载对象
     *
     * @param key 唯一键
     */
    public COSObject getObject(String key) {
        GetObjectRequest getObjectRequest = new GetObjectRequest(cosClientConfig.getBucket(), key);
        return cosClient.getObject(getObjectRequest);
    }

    /**
     * 上传对象（并返回图片信息）
     *
     * @param key  唯一键
     * @param file 文件
     */
    public PutObjectResult putPictureObject(String key, File file) {
        PutObjectRequest putObjectRequest = new PutObjectRequest(cosClientConfig.getBucket(), key,
                file);
        // 1.对图片进行基本处理（获取基本信息也被视作为一种处理）用于定义图片处理的参数。
        PicOperations picOperations = new PicOperations();
        //  “1”表示返回原图信息，表示在上传图片时需要返回图片的基本信息。
        picOperations.setIsPicInfo(1);

        //2.图片处理规则列表
        List<PicOperations.Rule> rules = new ArrayList<>();
        //图片压缩处理规则：转成webp格式
        String webpKey = FileUtil.mainName(key) + ".webp";
        PicOperations.Rule compressRule = new PicOperations.Rule();
        compressRule.setFileId(webpKey);
        compressRule.setBucket(cosClientConfig.getBucket());
        compressRule.setRule("imageMogr2/format/webp");
        rules.add(compressRule);

        //图片缩略图处理规则
        PicOperations.Rule thumbnailrule = new PicOperations.Rule();
        if (file.length() > 2 * 1024){
            //拼接缩略图路径
            String thumbnailKey =
                    FileUtil.mainName(key) + "_thumbnail."+FileUtil.getSuffix(key);
            thumbnailrule.setFileId(thumbnailKey);
            thumbnailrule.setBucket(cosClientConfig.getBucket());
            thumbnailrule.setRule(String.format("imageMogr2/thumbnail/%sx%s",256,256));
            rules.add(thumbnailrule);
        }

        // 3.构造处理参数
        picOperations.setRules(rules);
        putObjectRequest.setPicOperations(picOperations);
        return cosClient.putObject(putObjectRequest);
    }

    /**
     * 删除云存储对象
     *
     * @param key 文件 key
     */
    public void deleteObject(String key) throws CosClientException {
        cosClient.deleteObject(cosClientConfig.getBucket(), key);
    }

}
